Filtration apparatus

Details Filtration apparatus Filtration apparatus

2007-09-11

2007-09-11

Savage, Matthew O. (Department: 1724)

Liquid purification or separation

With repair or assembling means

C210S269000, C210S276000, C210S280000

Reexamination Certificate

active

10495917

ABSTRACT:
A cleansing tank38and a screw conveyor32are removably mounted to a mounting opening22of a filtration tank2. When the cleansing tank38and the screw conveyor32are to be removed, they can be extracted to the exterior of the filtration tank2, by detaching a base28, which axially supports the screw conveyor32, from a rim24. Purified water is backwashed through a purified water discharge pipe60when the cleansing tank38and the screw conveyor32are extracted and inserted through the mounting opening22. This causes filtration media14to float, thereby reducing the resistance thereof.

REFERENCES:
patent: 3747768 (1973-07-01), Barrera
patent: 4787987 (1988-11-01), Hensley
patent: 6273106 (2001-08-01), Saitoh
patent: 2001/0018921 (2001-09-01), Saitoh
patent: 31491 (1917-09-01), None
patent: 63-98704 (1988-06-01), None
patent: 8-215509 (1996-08-01), None
patent: 8-215510 (1996-08-01), None
patent: 10-109051 (1998-04-01), None
patent: 11-057526 (1999-03-01), None
patent: WO 01/83076 (2001-11-01), None
International Search Report for PCT/JP02/11991 dated Feb. 25, 2003.
International Preliminary Examination Report for PCT/JP02/11991 dated Jun. 30, 2003.

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